551 search results for “dna” in the Public website
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The Power of Knowledge Ethical, Legal and Technological Aspects of Data Mining and Group Profiling in Epidemiology
With the rise of information and communication technologies, large amounts of data are being generated and stored in databases. In order to get a better grip on these large amounts of data, serious efforts are being made to discover patterns and relations in the data with the help of new techniques.…
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Evolutionary diversification and historical biogeography of Orchidaceae in Central America with emphasis on Costa Rica and Panama
In this thesis, I targeted the orchid genus Lepanthes, one of the six genera of angiosperms that surpasses 1,000 species in the Neotropics, as a study model to investigate the evolutionary processes that promoted species diversifications.
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A computational study of structural and excitonic properties of chlorosomes
The long-held desire - to link structure directly to function and to explain molecular mechanisms based on basic chemical or physical principles - is finally coming closer, satisfying not only our scientific curiosity but also offering new solutions to the many challenges in the field of health, energy…
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Research (themes)
Besides the Hortus being a beautiful place where visitors can relax and learn more about plants, we also facilitate botanical research. Thousands of plants are cultivated for research purposes in our greenhouses. These include tropical orchids, ferns, the soursop family (Annonaceae), the dogbane family…
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Discoveries in 2023
From nanoparticles to colliding ice planets and from biological origami to new x-ray scanner techniques: this year again, our scientists have made wonderful discoveries. From the largest numbers to the smallest molecules and from the oldest galaxies up to the latest algorithms, take a look at each institute's…
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Unravelling East Africa’s Early Linguistic History (LHEAf)
This project investigates the rich linguistic history of the crucial language groups in East Africa and includes a search for words that indicate earlier lost languages. These outcomes, combined with recent archaeological and genetic research, will contribute to a new understanding of East Africa’s…
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Department of Environmental Biology (CML-EB)
Mission: The Environmental Biology department aims to increase the scientific understanding of how current and emerging anthropogenic threats affect biodiversity and ecosystem services. Through this understanding they facilitate strategic management of natural resources by addressing urgent challenges…
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Laminar Technology and the Onset of the Upper Paleolithic in the Altai, Siberia
The Altai region has yielded a cluster of Middle and Upper Paleolithic stratified sites that have been recently excavated using a multidisciplinary approach.
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Synthetic Methodology Towards ADP-Ribosylation Related Molecular Tools
Phosphorylation affects all four major biomolecules – proteins, lipids, carbohydrates and nucleic acids – and plays a pivotal role in the most fundamental cellular functions.
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Bioinformatics (MSc)
The master's specialisation Bioinformatics at Leiden University focuses on research, development and application of computational tools and approaches for expanding the use of biological, medical, behavioral and health data.
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Key publications
Key publications of the Cancer Drug Target Discovery group
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Neandertal genome from Les Cottés site sequenced
On March 21 2018, a study was published in Nature, co-authored by Professor M. Soressi from the Faculty of Archaeology of Leiden University, announcing the sequencing of five new Neandertals, raising the number of high-coverage sequenced Neandertals from two to seven. A tooth lost by a Neandertal woman…
- Publication highlights
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Research at the Living Lab
What is the effect of pesticides, fertilizers or plastic on water quality? And how do wind and rain affect the data? These are just some of the things that Leiden environmental scientists study in the 32 ditches of the Living Lab.
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Research
Research at the Macromolecular Biochemistry group is comprised of the following research themes:
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Making fuels from sunlight and CO2
Plants could be regarded as small chemical factories, which produce chemical substances via photosynthesis. If we can imitate photosynthesis in an artificial system, we can make clean fuels and materials out of sunlight and CO2. Huub de Groot is very close to designing a system of this kind.
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Ten years ERC: Sylvestre Bonnet kills cancer with light
In 2013, Sylvestre Bonnet received an ERC Starting Grant to kill cancer with molecules that can be activated by light. Two postdocs and three PhD students later, the end approaches of his so far successful project.
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Unraveling networks of human mobility and exchange of goods and ideas from a pre-colonial, pan-Caribbean perspective
Since the emergence of humankind people have maintained social contacts and traveled widely, establishing interaction networks in which goods are traded and ideas are transmitted, increasingly on a global scale.
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Host-Microbe Interactions in Plant Sciences
Plant Sciences' contribution to the Host-Microbe Interactions research theme is to dissect how microorganisms and microbiomes interact with the plant host and the insects on those plants, and how these insights may be harnessed to improve plant growth and health, by steering microbiome composition and…
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Leiden in the Caribbean
The research involves the application and combination of archaeological and archaeometrical methodologies. Petrographic analysis and isotopic provenance studies of raw materials and exotics, and the study of the distribution patterns of these materials are used to gain insight into the exchange of goods…
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Light-activatable ruthenium-based anticancer prodrugs
Can light-activatable ruthenium compounds be used as a more selective anticancer treatment?
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From stress to success: how actinobacteria exploit life without a cell wall
The central question of this Vici proposal is to investigate if, and how actinobacteria exploit life without a cell wall.
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Talks
Five talks will be given during the Leiden Science Family Day: two children's lectures and three lectures for adults. Will you be there ?
- Kickstart your curiosity and learn about science at one of the many stands
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Leiden Institute of Physics
Research at the Leiden Institute of Physics (LION) is foundational and curiosity driven. All our scientists share a desire to increase the knowledge of the world around us, in an open atmosphere of inquiry from which innovative ideas emerge that provide applications and value for society.
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Alternatives to animal experiments: Replacement, Reduction and Refinement
We aim to conduct as few animal experiments as possible. We are continually exploring methods to Replace, Reduce, and Refine animal experiments, commonly referred to as the three Rs. Additionally, we assess each study to ensure the implementation of the 3Rs has been maximised. The Animal Welfare Body…
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Neanderthals coming out of the dirt
Extinct hominin DNA extracted from >40,000 years old sediment
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Startup brings new genetic knowledge to companies
On 29 June the startup company Future Genomics Technologies will be launched. Its aim is to make DNA technology and research available for businesses faster. Future Genomics Technologies is a collaboration between DNA research laboratory BaseClear and Leiden University.
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‘Pharmacogenetics will become part of patient care’
Does medicine make patients feel better or worse? We are getting better at predicting this from people’s DNA profiles, says Professor Jesse Swen. ‘It never fails to fascinate me how one DNA base pair can have such a huge effect on treatment with medication and the outcome.’
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Our genome captured in numbers
‘It's where disciplines intersect that the most exciting scientific questions arise.' This was the message given by John van Noort, Professor of Biophysics, in his inaugural lecture. His own research is at the interface between biology and physics. Inaugural lecture 23 April.
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Caught in living cells: how bacteria regulate their genes to defend themselves
For the first time, it was shown in living cells how the bacterium E. coli regulates genes that help it survive in a new environment. Biochemist Fatema Zahra Rashid managed to do this using a technique she fine-tuned. Her research into changes in 3-dimensional chromosome structure offers clues for ways…
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Topology of polymer chains under nanoscale confinement: insights into genome folding
This month, a paper was published in Nanoscale by scientists from Dr. Alireza Mashaghi group at the Systems Biomedicine and Pharmacology Division in collaboration with the group of Dr. Sander Tans from TU Delft/AMOLF. In this paper, the authors studied how nanoscale spatial confinement affects the fold…
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Leiden researchers visualise the 'guardian of our genome’
The guardian of our genome, the protein MutS, scans the DNA for spelling errors and makes sure they are corrected. An essential process for our health. Researchers at Leiden University Medical Centre (LUMC) have discovered precisely how this protein works by making MutS visible with cryo-electron microscopy.…
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Light-activatable metallodrugs and metal-functionalized liposomes
Metal-containing molecules combine geometrical features and a reactivity that are inherently different from that of organic molecules. My research focuses on light-activatable metal-based anticancer drugs and metal-functionalized liposomes. Light is a very selective way to activate photosensitive drugs…
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Classes on offer
Below you will find an overview of all PRE-Classes provided by the various programmes of Leiden University. For each section, you can find a description of the content and more specific information about the requirements for participation in the Class.
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Movements of steroid receptors inside the cell nucleus unraveled
Advanced fluorescence microscopy techniques have revealed how steroid receptors move inside the nucleus. The results were published by a team from Leiden University and the Erasmus Medical Center in Rotterdam, led by IBL-researcher Marcel Schaaf.
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Thesis prizes awarded at New Year’s Reception
During the New Year’s reception on Thursday 10 January 2019 prizes were awarded for the three best (Dutch) master’s theses in 2018.
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Smart chemistry rids anti-cancer drugs of serious side effects
Researchers of the Leiden University Medical Centre (LUMC) and the Leiden Institute of Chemistry have made an important discovery about the commonly used anti-cancer drug doxorubicin. They have found a way to reduce its side effects without sacrificing the effectiveness of the medication. This is encouraging…
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The chemistry behind cancer drugs: searching for fewer side effects
PhD candidate Dennis Wander searches for the best of both worlds. That is to say: a cancer drug that is effective and also has minimal side effects. To this end, he makes new molecules inspired by two existing medicines. And not without result: ‘We have created a new variant that is very promising.’…
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alpine newts did not travel to the Netherlands themselves
Leiden biology students have determined the origin of exotic alpine newts in the Netherlands using a special DNA technique.
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Leiden experiments in DWDD University
Prof. Robbert Dijkgraaf used experiments and models from Leiden University for his tv lecture on symmetry. The lecture was broadcast live on channel 1. He showed that our DNA only twists in one direction using a plastic DNA model and he used a Chladni plate to show the symmetry of sound.
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‘Look beyond your own discipline’
Good research means looking beyond disciplinary boundaries, said Professor of Molecular and Cellular Biochemistry Remus Dame in his inaugural lecture on 10 May. Processes that take place on DNA shouldn’t only be researched in a test tube but also in living cells, for instance.
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About Faculty of Science
The Faculty of Science is located at the Leiden Bio Science Park. It was founded more than two centuries ago and currently, more than 8000 people are working and studying at the eight institutes.
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Institute of Environmental Sciences
Natural resources are becoming increasingly scarce. If we want to maintain our current standard of living, we will need inventive solutions. The researchers at the Institute of Environmental Sciences (CML) share their thoughts on how to achieve a fully circular economy in which as little use as possible…
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Growth and development of actinomycetes
We aim to provide new insights relating to the spectacular multi-cellular life cycle of streptomycetes and other actinobacteria.
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Development of Quantitative Nanostructure Activity Relationship (QNAR) Models Predicting the Toxicity of Metal-based Nanoparticles to Aquatic
Describe and identify what dosimetry parameters are of importance to interpret dose-response relationships (eg., mortality, sub-lethal, growth or reproduction inhabitation, DNA damage and reactive oxygen species, etc. ) for metal-based nanoparticles? How to develop quantitative models that enable to…
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Towards nano-MRI
By detecting the tiny forces between a micrometer sized magnet and the spins of hydrogen nuclei, we can do MRI with a volume resolution that is approximately 12 orders of magnitude better than a conventional MRI.
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16th International Metabolomics Workshop
The Basics and Applications to Plant Sciences will be held physical. See below for more information.
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Ahmed Mahfouz: 'The mystery of brain diseases, unravelled cell by cell'
Which brain cell does what, when Parkinson's disease arises? It won't be long before this jigsaw is solved piece by piece. Ahmed Mahfouz, computational biologist, combines bio-knowledge from Leiden with algorithms from Delft and is getting closer to finding the key.
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Innate immune defence against intracellular pathogens
What are the host immune defence mechanisms that control intracellular infections and how are these subverted by pathogens?